Handle extension for a knife



FIG. 1 is a perspective view of a handle extension for a knife, showing our new design;

FIG. 2 is a perspective view thereof, with the handle extension disconnected from the handle of the knife;

FIG. 3 is a right side view of the handle extension disconnected from the knife;

FIG. 4 is a left side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a front view thereof; and,

FIG. 8 is a back view thereof.

The dot-dot-dash broken lines represent an unclaimed boundary of the claimed design. The remainder of the broken lines depict either a balisong knife, or portions of the handle extension in which the design is embodied, that form no part of the claimed design. 

CLAIM We claim the ornamental design for a handle extension for a knife, as shown and described. 